Binary 1900 Hybrid IEMs Review

The Binary 1900 is a hybrid in-ear monitor from Binary, listed at $230 in two options that are named for their plug, 3.5mm or 4.4mm. The page lists a 10mm dynamic driver, a 6mm passive radiator and four balanced armature drivers per side behind a 3-way crossover, with 316L stainless steel faceplates and resin shells. The page text gives no impedance, sensitivity or frequency range.

Specifications

Options and pricing

Two options are listed, 1900 3.5mm and 1900 4.4mm, each at $230 and each orderable when the page was read. The page shows a crossed-out price of $235 next to $230. The page says buyers pick the 3.5mm or 4.4mm termination at purchase on a detachable silver-plated OFC braided cable with standard 0.78mm 2-pin connectors, and it lists a storage case and eartips in the package. The page text gives no eartip count or sizes.

How it compares

Next to the DUNU DN142 1DD + 4BA + 2 Planar Tribrid Drivers IEMs at $237.49, which per its spec line adds two planar drivers to one dynamic driver and four balanced armatures, the Binary costs $230 for a dynamic driver, a passive radiator and four armatures. The Moondrop Kadenz 10mm Dynamic Driver In-Ear Earphone is $219.99 and its name gives a 10mm dynamic driver. The Binary lists 3.5mm and 4.4mm options; the siblings' names and spec lines do not state their plugs.

Shipping, returns and warranty

HiFiGO sells from hifigo.com and says every order leaves its warehouse in China, usually 1-3 business days after it is placed, and says its delivery times are estimates, not promises. Its shipping policy gives the United States 1-2 weeks (about 10 days on average) by Priority and 6-10 days by Premium, both with duties and taxes prepaid by the store; Canada 2-3 weeks; the United Kingdom 1-2 weeks; and Australia 10-15 days. Express couriers (DHL, UPS, FedEx) take 3-7 days, but then the buyer pays any duties and taxes. No shipping page names New Zealand, PO boxes are not accepted, and the free-shipping thresholds differ between the store's own pages, so check the cart. One of its two shipping pages adds that a lost parcel on an order above $50 gets only a 50% refund. A US buyer reported a $40 tariff charge in August 2025, after which HiFiGO said it had added a customs notice at checkout.

Read the return terms before you order. The homepage advertises 7-day returns. Both of HiFiGO's policy pages offer a 7-day dead-on-arrival cover (a replacement or a full refund, with the return postage refunded) and also describe 30-day returns, but a request made 7 to 30 days after delivery loses 30% of the MSRP as a restocking fee (10% more if the packaging is incomplete), plus shipping both ways and duties, and the FAQ on the same pages says there is no refund or exchange once 7 days have passed. One version recommends reselling an opened product locally. Custom IEMs and custom cables cannot be returned, no return address is published, and buyers describe sending items back to China.

HiFiGO's warranty runs one year from the order date for parts and labor; its policy names desktop DACs and amps, IEMs and dongles at one year and gives cables and adapters three months. HiFiGO decides between repair and replacement, the buyer pays the shipping, and faulty items go back for service, not for a refund. Claims go to [email protected], the only contact the store lists: its pages name no company, street address or phone, and its terms are governed by the laws of China.

On Trustpilot, HiFiGO had 4.6 out of 5 from 378 reviews when we checked on 2026-10-28 (91% five-star, 5% one-star), and it had replied to about 75% of negative reviews; Trustpilot notes the store has not invited customers to review recently. The one-star reviews mostly concern the short return window and the deductions on returns, items listed in stock that turned out back-ordered, slow email support and a tariff charge on a US delivery in 2025. HiFiGO says its products are genuine and come in the brands' retail packaging; it does not claim to be an authorized dealer.